User guide

You can use other generic labels to indicate other types of query criteria. The generic labels that Chem & Bio Office
13.0 supports are listed below (all are recognized as chemically significant).
A: represents any non hydrogen.
M: represents a metal.
Q: represents an atom that is neither hydrogen nor carbon.
X: represents any halide.
R: unrestricted; represents one or more connected atoms of any kind.
To add a generic label to a structure, do one of the following:
Double-click the atom to open a text box, and type in the nickname.
Right-click the atom, point to Insert Generic Label on the context menu, and click the label you wish to insert on
the sub-menu.
Generic nickname hotkeys
You can assign hotkeys to generic nicknames just like other nicknames. For information on assigning a Hotkey to a
nickname, see "Customizing hotkeys" on page 268.
Defining generic nicknames
The generic nicknames recognized as chemically meaningful are listed in the Generic Nicknames file in the
ChemDraw Items folder.
To edit the generic nickname files, open the Generic Nicknames file in a text editor and make your changes. Follow
examples in the file for the correct format.
Note: If you check a structure that has a generic nickname, a message is displayed because the structure con-
tains variable substituents. If you ignore this message, the generic nicknames are ignored and the chemical for-
mula, mass, etc. are reported as if the atom label containing the generic nickname were not selected.
Reaxys
Reaxys is a web-based chemical search engine designed for synthetic and medical chemists. The Reaxys database
includes chemical properties, structures, reactions and experimental data. Using ChemDraw for Reaxys® with
ChemDraw, you can draw query structures to search the Reaxys database.
ChemBioDraw 13.0
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